shell/ev-sidebar-links.c

   1 /* this file is part of evince, a gnome document viewer
   2  *
   3  *  Copyright (C) 2004 Red Hat, Inc.
   4  *
   5  *  Author:
   6  *    Jonathan Blandford <jrb@alum.mit.edu>
   7  *
   8  * Evince is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * Evince is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  21  */
  22
  23 #ifdef HAVE_CONFIG_H
  24 #include "config.h"
  25 #endif
  26
  27 #include <string.h>
  28 #include <glib/gi18n.h>
  29 #include <gtk/gtk.h>
  30
  31 #include "ev-sidebar-page.h"
  32 #include "ev-sidebar-links.h"
  33 #include "ev-job-queue.h"
  34 #include "ev-document-links.h"
  35 #include "ev-window.h"
  36 #include "ev-gui.h"
  37
  38 struct _EvSidebarLinksPrivate {
  39         GtkWidget *tree_view;
  40
  41         /* Keep these ids around for blocking */
  42         guint selection_id;
  43         guint page_changed_id;
  44         guint row_activated_id;
  45
  46         EvJob *job;
  47         GtkTreeModel *model;
  48         EvDocument *document;
  49         EvPageCache *page_cache;
  50 };
  51
  52 enum {
  53         PROP_0,
  54         PROP_MODEL,
  55         PROP_WIDGET,
  56 };
  57
  58 enum {
  59         LINK_ACTIVATED,
  60         N_SIGNALS
  61 };
  62
  63 static void links_page_num_func                         (GtkTreeViewColumn *tree_column,
  64                                                          GtkCellRenderer   *cell,
  65                                                          GtkTreeModel      *tree_model,
  66                                                          GtkTreeIter       *iter,
  67                                                          EvSidebarLinks    *sidebar_links);
  68 static void update_page_callback                        (EvPageCache       *page_cache,
  69                                                          gint               current_page,
  70                                                          EvSidebarLinks    *sidebar_links);
  71 static void row_activated_callback                      (GtkTreeView *treeview,
  72                                                          GtkTreePath *arg1,
  73                                                          GtkTreeViewColumn *arg2,
  74                                                          gpointer user_data);
  75 static void job_finished_callback                       (EvJobLinks     *job,
  76                                                          EvSidebarLinks *sidebar_links);
  77 static void ev_sidebar_links_page_iface_init            (EvSidebarPageIface *iface);
  78 static void ev_sidebar_links_set_document               (EvSidebarPage  *sidebar_page,
  79                                                          EvDocument     *document);
  80 static gboolean ev_sidebar_links_support_document       (EvSidebarPage  *sidebar_page,
  81                                                          EvDocument     *document);
  82 static const gchar* ev_sidebar_links_get_label          (EvSidebarPage *sidebar_page);
  83
  84 static guint signals[N_SIGNALS];
  85
  86 G_DEFINE_TYPE_EXTENDED (EvSidebarLinks,
  87                         ev_sidebar_links,
  88                         GTK_TYPE_VBOX,
  89                         0,
  90                         G_IMPLEMENT_INTERFACE (EV_TYPE_SIDEBAR_PAGE,
  91                                                ev_sidebar_links_page_iface_init))
  92
  93
  94 #define EV_SIDEBAR_LINKS_GET_PRIVATE(object) \
  95         (G_TYPE_INSTANCE_GET_PRIVATE ((object), EV_TYPE_SIDEBAR_LINKS, EvSidebarLinksPrivate))
  96
  97 static void
  98 ev_sidebar_links_set_property (GObject      *object,
  99                                guint         prop_id,
 100                                const GValue *value,
 101                                GParamSpec   *pspec)
 102 {
 103         EvSidebarLinks *ev_sidebar_links;
 104         GtkTreeModel *model;
 105
 106         ev_sidebar_links = EV_SIDEBAR_LINKS (object);
 107
 108         switch (prop_id)
 109         {
 110         case PROP_MODEL:
 111                 model = ev_sidebar_links->priv->model;
 112                 ev_sidebar_links->priv->model = GTK_TREE_MODEL (g_value_dup_object (value));
 113                 if (model)
 114                         g_object_unref (model);
 115                 break;
 116         default:
 117                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 118                 break;
 119         }
 120 }
 121
 122 static void
 123 ev_sidebar_links_get_property (GObject    *object,
 124                                guint       prop_id,
 125                                GValue     *value,
 126                                GParamSpec *pspec)
 127 {
 128         EvSidebarLinks *ev_sidebar_links;
 129
 130         ev_sidebar_links = EV_SIDEBAR_LINKS (object);
 131
 132         switch (prop_id)
 133         {
 134         case PROP_MODEL:
 135                 g_value_set_object (value, ev_sidebar_links->priv->model);
 136                 break;
 137         case PROP_WIDGET:
 138                 g_value_set_object (value, ev_sidebar_links->priv->tree_view);
 139                 break;
 140         default:
 141                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 142                 break;
 143         }
 144 }
 145
 146 static void
 147 ev_sidebar_links_dispose (GObject *object)
 148 {
 149         EvSidebarLinks *sidebar = EV_SIDEBAR_LINKS (object);
 150
 151         if (sidebar->priv->job) {
 152                 g_signal_handlers_disconnect_by_func (sidebar->priv->job,
 153                                                       job_finished_callback, sidebar);
 154                 ev_job_queue_remove_job (sidebar->priv->job);
 155                 g_object_unref (sidebar->priv->job);
 156                 sidebar->priv->job = NULL;
 157         }
 158
 159         if (sidebar->priv->model) {
 160                 g_object_unref (sidebar->priv->model);
 161                 sidebar->priv->model = NULL;
 162         }
 163
 164         if (sidebar->priv->document) {
 165                 g_object_unref (sidebar->priv->document);
 166                 sidebar->priv->document = NULL;
 167                 sidebar->priv->page_cache = NULL;
 168         }
 169
 170
 171         G_OBJECT_CLASS (ev_sidebar_links_parent_class)->dispose (object);
 172 }
 173
 174 static void
 175 ev_sidebar_links_class_init (EvSidebarLinksClass *ev_sidebar_links_class)
 176 {
 177         GObjectClass *g_object_class;
 178
 179         g_object_class = G_OBJECT_CLASS (ev_sidebar_links_class);
 180
 181         g_object_class->set_property = ev_sidebar_links_set_property;
 182         g_object_class->get_property = ev_sidebar_links_get_property;
 183         g_object_class->dispose = ev_sidebar_links_dispose;
 184
 185         signals[LINK_ACTIVATED] = g_signal_new ("link-activated",
 186                          G_TYPE_FROM_CLASS (g_object_class),
 187                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 188                          G_STRUCT_OFFSET (EvSidebarLinksClass, link_activated),
 189                          NULL, NULL,
 190                          g_cclosure_marshal_VOID__OBJECT,
 191                          G_TYPE_NONE, 1, G_TYPE_OBJECT);
 192
 193         g_object_class_install_property (g_object_class,
 194                                          PROP_MODEL,
 195                                          g_param_spec_object ("model",
 196                                                               "Model",
 197                                                               "Current Model",
 198                                                               GTK_TYPE_TREE_MODEL,
 199                                                               G_PARAM_READWRITE));
 200         g_object_class_override_property (g_object_class,
 201                                           PROP_WIDGET,
 202                                           "main-widget");
 203
 204         g_type_class_add_private (g_object_class, sizeof (EvSidebarLinksPrivate));
 205 }
 206
 207 static void
 208 selection_changed_callback (GtkTreeSelection   *selection,
 209                             EvSidebarLinks     *ev_sidebar_links)
 210 {
 211         EvDocument *document;
 212         GtkTreeModel *model;
 213         GtkTreeIter iter;
 214
 215         g_return_if_fail (EV_IS_SIDEBAR_LINKS (ev_sidebar_links));
 216
 217         document = EV_DOCUMENT (ev_sidebar_links->priv->document);
 218         g_return_if_fail (ev_sidebar_links->priv->document != NULL);
 219
 220         if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
 221                 EvLink *link;
 222
 223                 gtk_tree_model_get (model, &iter,
 224                                     EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 225                                     -1);
 226
 227                 if (link == NULL)
 228                         return;
 229
 230                 g_signal_handler_block (ev_sidebar_links->priv->page_cache,
 231                                         ev_sidebar_links->priv->page_changed_id);
 232                 g_signal_emit (ev_sidebar_links, signals[LINK_ACTIVATED], 0, link);
 233                 g_signal_handler_unblock (ev_sidebar_links->priv->page_cache,
 234                                           ev_sidebar_links->priv->page_changed_id);
 235
 236                 g_object_unref (link);
 237         }
 238 }
 239
 240 static GtkTreeModel *
 241 create_loading_model (void)
 242 {
 243         GtkTreeModel *retval;
 244         GtkTreeIter iter;
 245         gchar *markup;
 246
 247         /* Creates a fake model to indicate that we're loading */
 248         retval = (GtkTreeModel *)gtk_list_store_new (EV_DOCUMENT_LINKS_COLUMN_NUM_COLUMNS,
 249                                                      G_TYPE_STRING,
 250                                                      G_TYPE_OBJECT,
 251                                                      G_TYPE_BOOLEAN);
 252
 253         gtk_list_store_append (GTK_LIST_STORE (retval), &iter);
 254         markup = g_strdup_printf ("<span size=\"larger\" style=\"italic\">%s</span>", _("Loading..."));
 255         gtk_list_store_set (GTK_LIST_STORE (retval), &iter,
 256                             EV_DOCUMENT_LINKS_COLUMN_MARKUP, markup,
 257                             EV_DOCUMENT_LINKS_COLUMN_EXPAND, FALSE,
 258                             EV_DOCUMENT_LINKS_COLUMN_LINK, NULL,
 259                             -1);
 260         g_free (markup);
 261
 262         return retval;
 263 }
 264
 265 static void
 266 print_section_cb (GtkWidget *menuitem, EvSidebarLinks *sidebar)
 267 {
 268         GtkWidget *window;
 269         GtkTreeSelection *selection;
 270         GtkTreeModel *model;
 271         GtkTreeIter iter;
 272
 273         selection = gtk_tree_view_get_selection
 274                 (GTK_TREE_VIEW (sidebar->priv->tree_view));
 275
 276         if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
 277                 EvLink *link;
 278                 int first_page, last_page;
 279
 280                 gtk_tree_model_get (model, &iter,
 281                                     EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 282                                     -1);
 283                 first_page = ev_link_get_page (link) + 1;
 284
 285                 if (link)
 286                         g_object_unref (link);
 287
 288                 if (gtk_tree_model_iter_next (model, &iter)) {
 289                         gtk_tree_model_get (model, &iter,
 290                                             EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 291                                             -1);
 292                         last_page = ev_link_get_page (link);
 293
 294                         if (link)
 295                                 g_object_unref (link);
 296                 } else {
 297                         last_page =  ev_page_cache_get_n_pages (sidebar->priv->page_cache);
 298                 }
 299
 300                 window = gtk_widget_get_toplevel (GTK_WIDGET (sidebar));
 301                 if (EV_IS_WINDOW (window)) {
 302 #ifdef WITH_GNOME_PRINT
 303                         ev_window_print_range (EV_WINDOW (window),
 304                                                first_page, last_page);
 305 #endif
 306                 }
 307         }
 308 }
 309
 310 static GtkMenu *
 311 build_popup_menu (EvSidebarLinks *sidebar)
 312 {
 313         GtkWidget *menu;
 314         GtkWidget *item;
 315
 316         menu = gtk_menu_new ();
 317         item = gtk_image_menu_item_new_from_stock (GTK_STOCK_PRINT, NULL);
 318         gtk_label_set_label (GTK_LABEL (GTK_BIN (item)->child), _("Print..."));
 319         gtk_widget_show (item);
 320         gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
 321         g_signal_connect (item, "activate",
 322                           G_CALLBACK (print_section_cb), sidebar);
 323
 324         return GTK_MENU (menu);
 325 }
 326
 327 static void
 328 popup_menu_cb (GtkWidget *treeview, EvSidebarLinks *sidebar)
 329 {
 330         GtkMenu *menu = build_popup_menu (sidebar);
 331
 332         gtk_menu_popup (menu, NULL, NULL,
 333                         ev_gui_menu_position_tree_selection,
 334                         sidebar->priv->tree_view, 0,
 335                         gtk_get_current_event_time ());
 336         gtk_menu_shell_select_first (GTK_MENU_SHELL (menu), FALSE);
 337 }
 338
 339 static gboolean
 340 button_press_cb (GtkWidget *treeview,
 341                  GdkEventButton *event,
 342                  EvSidebarLinks *sidebar)
 343 {
 344         GtkTreePath *path = NULL;
 345
 346         if (event->button == 3) {
 347                 if (gtk_tree_view_get_path_at_pos (GTK_TREE_VIEW (treeview),
 348                                                    event->x,
 349                                                    event->y,
 350                                                    &path,
 351                                                    NULL, NULL, NULL)) {
 352                         gtk_tree_view_set_cursor (GTK_TREE_VIEW (treeview),
 353                                                   path, NULL, FALSE);
 354                         gtk_menu_popup (build_popup_menu (sidebar), NULL,
 355                                         NULL, NULL, NULL, event->button,
 356                                         gtk_get_current_event_time ());
 357                         gtk_tree_path_free (path);
 358
 359                         return TRUE;
 360                 }
 361         }
 362
 363         return FALSE;
 364 }
 365
 366
 367 static void
 368 ev_sidebar_links_construct (EvSidebarLinks *ev_sidebar_links)
 369 {
 370         EvSidebarLinksPrivate *priv;
 371         GtkWidget *swindow;
 372         GtkTreeViewColumn *column;
 373         GtkCellRenderer *renderer;
 374         GtkTreeSelection *selection;
 375         GtkTreeModel *loading_model;
 376
 377         priv = ev_sidebar_links->priv;
 378
 379         swindow = gtk_scrolled_window_new (NULL, NULL);
 380
 381         gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (swindow),
 382                                         GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
 383         gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (swindow),
 384                                              GTK_SHADOW_IN);
 385
 386         /* Create tree view */
 387         loading_model = create_loading_model ();
 388         priv->tree_view = gtk_tree_view_new_with_model (loading_model);
 389         g_object_unref (loading_model);
 390
 391         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->tree_view));
 392         gtk_tree_selection_set_mode (selection, GTK_SELECTION_NONE);
 393         gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (priv->tree_view), FALSE);
 394         gtk_container_add (GTK_CONTAINER (swindow), priv->tree_view);
 395
 396         gtk_box_pack_start (GTK_BOX (ev_sidebar_links), swindow, TRUE, TRUE, 0);
 397         gtk_widget_show_all (GTK_WIDGET (ev_sidebar_links));
 398
 399         column = gtk_tree_view_column_new ();
 400         gtk_tree_view_column_set_expand (GTK_TREE_VIEW_COLUMN (column), TRUE);
 401         gtk_tree_view_append_column (GTK_TREE_VIEW (priv->tree_view), column);
 402
 403         renderer = (GtkCellRenderer*)
 404                 g_object_new (GTK_TYPE_CELL_RENDERER_TEXT,
 405                               "ellipsize", PANGO_ELLIPSIZE_END,
 406                               NULL);
 407         gtk_tree_view_column_pack_start (GTK_TREE_VIEW_COLUMN (column), renderer, TRUE);
 408         gtk_tree_view_column_set_attributes (GTK_TREE_VIEW_COLUMN (column), renderer,
 409                                              "markup", EV_DOCUMENT_LINKS_COLUMN_MARKUP,
 410                                              NULL);
 411
 412
 413         renderer = gtk_cell_renderer_text_new ();
 414         gtk_tree_view_column_pack_end (GTK_TREE_VIEW_COLUMN (column), renderer, FALSE);
 415         gtk_tree_view_column_set_cell_data_func (GTK_TREE_VIEW_COLUMN (column), renderer,
 416                                                  (GtkTreeCellDataFunc) links_page_num_func,
 417                                                  ev_sidebar_links, NULL);
 418
 419         g_signal_connect (GTK_TREE_VIEW (priv->tree_view),
 420                           "button_press_event",
 421                           G_CALLBACK (button_press_cb),
 422                           ev_sidebar_links);
 423         g_signal_connect (GTK_TREE_VIEW (priv->tree_view),
 424                           "popup_menu",
 425                           G_CALLBACK (popup_menu_cb),
 426                           ev_sidebar_links);
 427 }
 428
 429 static void
 430 ev_sidebar_links_init (EvSidebarLinks *ev_sidebar_links)
 431 {
 432         ev_sidebar_links->priv = EV_SIDEBAR_LINKS_GET_PRIVATE (ev_sidebar_links);
 433
 434         ev_sidebar_links_construct (ev_sidebar_links);
 435 }
 436
 437 static void
 438 links_page_num_func (GtkTreeViewColumn *tree_column,
 439                      GtkCellRenderer   *cell,
 440                      GtkTreeModel      *tree_model,
 441                      GtkTreeIter       *iter,
 442                      EvSidebarLinks    *sidebar_links)
 443 {
 444         EvLink *link;
 445
 446         gtk_tree_model_get (tree_model, iter,
 447                             EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 448                             -1);
 449
 450         if (link != NULL &&
 451             ev_link_get_page (link) >= 0) {
 452                 gchar *page_label;
 453                 gchar *page_string;
 454
 455                 page_label = ev_page_cache_get_page_label (sidebar_links->priv->page_cache, ev_link_get_page (link));
 456                 page_string = g_markup_printf_escaped ("<i>%s</i>", page_label);
 457
 458                 g_object_set (cell,
 459                               "markup", page_string,
 460                               "visible", TRUE,
 461                               NULL);
 462
 463                 g_free (page_label);
 464                 g_free (page_string);
 465         } else {
 466                 g_object_set (cell,
 467                               "visible", FALSE,
 468                               NULL);
 469         }
 470
 471         if (link)
 472                 g_object_unref (link);
 473 }
 474
 475 /* Public Functions */
 476
 477 GtkWidget *
 478 ev_sidebar_links_new (void)
 479 {
 480         GtkWidget *ev_sidebar_links;
 481
 482         ev_sidebar_links = g_object_new (EV_TYPE_SIDEBAR_LINKS, NULL);
 483
 484         return ev_sidebar_links;
 485 }
 486
 487 static gboolean
 488 update_page_callback_foreach (GtkTreeModel *model,
 489                               GtkTreePath  *path,
 490                               GtkTreeIter  *iter,
 491                               gpointer      data)
 492 {
 493         EvSidebarLinks *sidebar_links = (data);
 494         EvLink *link;
 495
 496         gtk_tree_model_get (model, iter,
 497                             EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 498                             -1);
 499
 500         if (link) {
 501                 int current_page;
 502
 503                 current_page = ev_page_cache_get_current_page (sidebar_links->priv->page_cache);
 504                 if (ev_link_get_page (link) == current_page) {
 505                         GtkTreeSelection *selection;
 506
 507                         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (sidebar_links->priv->tree_view));
 508                         gtk_tree_selection_select_path (selection, path);
 509                         g_object_unref (link);
 510
 511                         return TRUE;
 512                 }
 513                 g_object_unref (link);
 514         }
 515
 516         return FALSE;
 517 }
 518
 519 static void
 520 update_page_callback (EvPageCache    *page_cache,
 521                       gint            current_page,
 522                       EvSidebarLinks *sidebar_links)
 523 {
 524         GtkTreeSelection *selection;
 525         GtkTreeModel *model;
 526         GtkTreeIter iter;
 527
 528         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (sidebar_links->priv->tree_view));
 529
 530         if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
 531                 EvLink *link;
 532
 533                 gtk_tree_model_get (model, &iter,
 534                                     EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 535                                     -1);
 536                 if (link) {
 537                         gint current_page;
 538                         current_page = ev_page_cache_get_current_page (sidebar_links->priv->page_cache);
 539                         if (ev_link_get_page (link) == current_page) {
 540                                 g_object_unref (link);
 541                                 return;
 542                         }
 543                         g_object_unref (link);
 544                 }
 545         }
 546
 547         /* We go through the tree linearly looking for the first page that
 548          * matches.  This is pretty inefficient.  We can do something neat with
 549          * a GtkTreeModelSort here to make it faster, if it turns out to be
 550          * slow.
 551          */
 552         g_signal_handler_block (selection, sidebar_links->priv->selection_id);
 553         g_signal_handler_block (sidebar_links->priv->tree_view, sidebar_links->priv->row_activated_id);
 554
 555         gtk_tree_model_foreach (model,
 556                                 update_page_callback_foreach,
 557                                 sidebar_links);
 558
 559         g_signal_handler_unblock (selection, sidebar_links->priv->selection_id);
 560         g_signal_handler_unblock (sidebar_links->priv->tree_view, sidebar_links->priv->row_activated_id);
 561 }
 562
 563 static void
 564 row_activated_callback                  (GtkTreeView *treeview,
 565                                          GtkTreePath *arg1,
 566                                          GtkTreeViewColumn *arg2,
 567                                          gpointer user_data)
 568 {
 569         if (gtk_tree_view_row_expanded (GTK_TREE_VIEW (treeview), arg1)) {
 570                     gtk_tree_view_collapse_row (GTK_TREE_VIEW (treeview), arg1);
 571         } else {
 572                     gtk_tree_view_expand_row (GTK_TREE_VIEW (treeview), arg1, FALSE);
 573         }
 574
 575         return;
 576 }
 577
 578 static void
 579 expand_open_links (GtkTreeView *tree_view, GtkTreeModel *model, GtkTreeIter *parent)
 580 {
 581         GtkTreeIter iter;
 582         gboolean expand;
 583
 584         if (gtk_tree_model_iter_children (model, &iter, parent)) {
 585                 do {
 586                         gtk_tree_model_get (model, &iter,
 587                                             EV_DOCUMENT_LINKS_COLUMN_EXPAND, &expand,
 588                                             -1);
 589                         if (expand) {
 590                                 GtkTreePath *path;
 591
 592                                 path = gtk_tree_model_get_path (model, &iter);
 593                                 gtk_tree_view_expand_row (tree_view, path, FALSE);
 594                                 gtk_tree_path_free (path);
 595                         }
 596
 597                         expand_open_links (tree_view, model, &iter);
 598                 } while (gtk_tree_model_iter_next (model, &iter));
 599         }
 600 }
 601
 602 static void
 603 job_finished_callback (EvJobLinks     *job,
 604                        EvSidebarLinks *sidebar_links)
 605 {
 606         EvSidebarLinksPrivate *priv;
 607         GtkTreeSelection *selection;
 608
 609         priv = sidebar_links->priv;
 610
 611         priv->model = job->model;
 612         g_object_notify (G_OBJECT (sidebar_links), "model");
 613
 614         gtk_tree_view_set_model (GTK_TREE_VIEW (priv->tree_view), job->model);
 615
 616         g_object_unref (job);
 617         priv->job = NULL;
 618
 619         expand_open_links (GTK_TREE_VIEW (priv->tree_view), priv->model, NULL);
 620
 621         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->tree_view));
 622         gtk_tree_selection_set_mode (selection, GTK_SELECTION_SINGLE);
 623         priv->selection_id = g_signal_connect (selection, "changed",
 624                                                G_CALLBACK (selection_changed_callback),
 625                                                sidebar_links);
 626         priv->page_changed_id = g_signal_connect (priv->page_cache, "page-changed",
 627                                                   G_CALLBACK (update_page_callback),
 628                                                   sidebar_links);
 629         priv->row_activated_id = g_signal_connect (G_OBJECT (priv->tree_view), "row-activated",
 630                                                     G_CALLBACK (row_activated_callback), sidebar_links);
 631         update_page_callback (priv->page_cache,
 632                               ev_page_cache_get_current_page (priv->page_cache),
 633                               sidebar_links);
 634
 635 }
 636
 637 static void
 638 ev_sidebar_links_set_document (EvSidebarPage  *sidebar_page,
 639                                EvDocument     *document)
 640 {
 641         EvSidebarLinks *sidebar_links;
 642         EvSidebarLinksPrivate *priv;
 643
 644         g_return_if_fail (EV_IS_SIDEBAR_PAGE (sidebar_page));
 645         g_return_if_fail (EV_IS_DOCUMENT (document));
 646
 647         sidebar_links = EV_SIDEBAR_LINKS (sidebar_page);
 648
 649         priv = sidebar_links->priv;
 650
 651         if (priv->document) {
 652                 gtk_tree_view_set_model (GTK_TREE_VIEW (priv->tree_view), NULL);
 653                 g_object_unref (priv->document);
 654         }
 655
 656         priv->document = g_object_ref (document);
 657         priv->page_cache = ev_page_cache_get (document);
 658
 659         if (priv->job) {
 660                 g_signal_handlers_disconnect_by_func (priv->job,
 661                                                       job_finished_callback,
 662                                                       sidebar_links);
 663                 g_object_unref (priv->job);
 664         }
 665
 666         priv->job = ev_job_links_new (document);
 667         g_signal_connect (priv->job,
 668                           "finished",
 669                           G_CALLBACK (job_finished_callback),
 670                           sidebar_links);
 671         /* The priority doesn't matter for this job */
 672         ev_job_queue_add_job (priv->job, EV_JOB_PRIORITY_LOW);
 673 }
 674
 675 static gboolean
 676 ev_sidebar_links_support_document (EvSidebarPage  *sidebar_page,
 677                                    EvDocument *document)
 678 {
 679         return (EV_IS_DOCUMENT_LINKS (document) &&
 680                     ev_document_links_has_document_links (EV_DOCUMENT_LINKS (document)));
 681 }
 682
 683 static const gchar*
 684 ev_sidebar_links_get_label (EvSidebarPage *sidebar_page)
 685 {
 686     return _("Index");
 687 }
 688
 689 static void
 690 ev_sidebar_links_page_iface_init (EvSidebarPageIface *iface)
 691 {
 692         iface->support_document = ev_sidebar_links_support_document;
 693         iface->set_document = ev_sidebar_links_set_document;
 694         iface->get_label = ev_sidebar_links_get_label;
 695 }
 696